Consolidated Balance Sheets - USD ($) $ in Thousands		Jan. 31, 2020	Jan. 31, 2019
Current assets:
Cash and cash equivalents		$ 476,733	$ 550,971
Short-term investments		610,015	539,190
Accounts receivable, net of allowance for doubtful accounts of $617 and $468, respectively		389,690	303,465
Unbilled accounts receivable		32,817	18,122
Prepaid expenses and other current assets		21,869	21,666
Total current assets		1,531,124	1,433,414
Property and equipment, net		54,752	54,966
Deferred costs, net		35,585	30,869
Lease right-of-use assets	[1]	49,132
Goodwill		438,529	95,804
Intangible assets, net		134,601	24,521
Deferred income taxes, noncurrent		11,870	5,938
Other long-term assets		16,184	8,254
Total assets		2,271,777	1,653,766
Current liabilities:
Accounts payable		19,420	9,110
Accrued compensation and benefits		25,619	15,324
Accrued expenses and other current liabilities		21,620	16,145
Income tax payable		5,613	4,086
Deferred revenue		468,887	356,357
Lease liabilities	[1]	10,013
Total current liabilities		551,172	401,022
Deferred income taxes, noncurrent		2,417	6,095
Lease liabilities, noncurrent	[1]	44,815
Other long-term liabilities		7,779	8,900
Total liabilities		606,183	416,017
Commitments and contingencies (Note 15)
Stockholders’ equity:
Additional paid-in capital		745,475	617,623
Accumulated other comprehensive income		460	928
Retained earnings		919,658	619,197
Total stockholders’ equity		1,665,594	1,237,749
Total liabilities and stockholders’ equity		2,271,777	1,653,766
Class A common stock
Stockholders’ equity:
Common Stock		1	1
Class B common stock
Stockholders’ equity:
Common Stock		$ 0	$ 0

[1] We adopted Accounting Standards Update (ASU) 2016-02, “Leases” (Topic 842) using the modified retrospective method as of February 1, 2019 and elected the transition option that allows us not to restate the comparative periods in our financial statements in the year of adoption.